One mole of CoCl3.YNH3 complex compound on complete ionisation in water produces three moles of ions. If one chloride satisfies both primary and secondary valencies of cobalt ion, the value of Y is

Question

One mole of CoCl3.YNH3 complex compound on complete ionisation in water produces three moles of ions. If one chloride satisfies both primary and secondary valencies of cobalt ion, the value of Y is (A) 3 (B) 4 (C) 5 (D) 6

Tardigrade Admin · Accepted Answer

Since, the coordination number of Co is 6, there must be six ligands inside the coordination sphere. As one mole of complex give three moles of ions, two

C l^{-}

ions must present outside the sphere. Hence, the formula of the complex is

[C o (N H_{3})_{5} Cl] C l_{2} . [C o (N H_{3})_{5} Cl] C l_{2}

Ionisation 3 ions [C o (N H_{3})_{5} Cl]^{2 +} + 2 C l^{-}

In this complex one Cl atom satisfies both primary and secondary valencies as
Hence, the value of Y is 5.

Q. One mole of CoCl3​.YNH3​ complex compound on complete ionisation in water produces three moles of ions. If one chloride satisfies both primary and secondary valencies of cobalt ion, the value of Y is

3

4

5

6

Q. One mole of $C o C l_{3} . Y N H_{3}$ complex compound on complete ionisation in water produces three moles of ions. If one chloride satisfies both primary and secondary valencies of cobalt ion, the value of Y is